非恒定流垂线流速分布规律的初探

从雷诺方程出发 ,通过对非恒定流的沿程阻力损失在垂线上分布规律的修正 ,可获得非恒定流和恒定非均匀流垂线流速分布公式。若定义均匀流垂线流速分布为A型 ,则非恒定流或恒定非均匀流垂线流速分布一般为B型和C型。B型分布在主流区 ,分布梯度大于A型 ;C型分布与A型相反 ,分布梯度一般为负

Discussion on the Pattern of Vertical Velocity Distribution of Unsteady Flow

On the basis of Reynolds' Equation,vertical velocity distribution formulae of unsteady flow and steady non uniform flow can be obtained by revising the vertical distribution pattern of resistance loss of unsteady flow.If vertical velocity distribution of uniform flow is defined as Type A, vertical velocity distribution of the unsteady flow or steady non uniform flow is generally Type B and Type C.Distributing gradient of Type B in the main flow area is larger than Type A.Distribution of Type C is adverse to Type A,and its distributing gradient is generally negative.